<p>Concur with those who recommend taking one in May and the next two in June. All subjects will still be fresh. Some kids can take all three at once, but for others three in a day is too much. Sounds like your D would be better served by breaking them up. </p>
<p>Also, it’s risky to rely on Score Choice; a number of colleges have announced they will not honor it, and will expect applicants to submit scores from all sittings of the SAT I and II.</p>